Due to the COVID-19 pandemic, you must stay at home and play Minecraft.

covidcraft_cloudformation.yml

AWSTemplateFormatVersion: '2010-09-09'
Description: 'Deploy Minecraft server running Spigot'
Parameters:
  KeyName:
    Description: Name of an existing EC2 KeyPair to enable SSH access to the instance
    Type: AWS::EC2::KeyPair::KeyName
    ConstraintDescription: must be the name of an existing EC2 KeyPair.
  InstanceType:
    Description: Minecraft Server EC2 instance type
    Type: String
    Default: t2.medium
    AllowedValues:
    - t2.micro
    - t2.medium
    - t3a.medium
    ConstraintDescription: must be a valid EC2 instance type.
  ManagementLocation:
    Description: The IP address range that can be used to SSH manage the EC2 instances
    Type: String
    MinLength: '9'
    MaxLength: '18'
    Default: 0.0.0.0/0
    AllowedPattern: "(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})/(\\d{1,2})"
    ConstraintDescription: must be a valid IP CIDR range of the form x.x.x.x/x.
  GameServerLocation:
    Description: The IP address range that can be used to connect to Minecraft
    Type: String
    MinLength: '9'
    MaxLength: '18'
    Default: 0.0.0.0/0
    AllowedPattern: "(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})/(\\d{1,2})"
    ConstraintDescription: must be a valid IP CIDR range of the form x.x.x.x/x.
Mappings:
  AWSInstanceType2Arch:
    t2.micro:
      Arch: HVM64
    t2.medium:
      Arch: HVM64
    t3a.medium:
      Arch: HVM64
  AWSInstanceType2NATArch:
    t2.micro:
      Arch: NATHVM64
    t2.medium:
      Arch: NATHVM64
    t3a.medium:
      Arch: NATHVM64
  AWSRegionArch2AMI:
    us-east-1:
      HVM64: ami-07ebfd5b3428b6f4d
Resources:
  MinecraftEC2Instance:
    Type: AWS::EC2::Instance
    Properties:
      InstanceType:
        Ref: InstanceType
      SecurityGroups:
      - Ref: MinecraftInstanceSecurityGroup
      KeyName:
        Ref: KeyName
      Tags:
      - 
        Key: "Name"
        Value: !Join
          - ''
          - - 'Minecraft_'
            - !Ref AWS::StackName
      ImageId:
        Fn::FindInMap:
        - AWSRegionArch2AMI
        - Ref: AWS::Region
        - Fn::FindInMap:
          - AWSInstanceType2Arch
          - Ref: InstanceType
          - Arch
      UserData:
        Fn::Base64: # run script on first boot
          !Sub |
            #!/bin/bash
            # set envs
            echo "export HOME=/root" >> /etc/profile
            echo "export HOME=/root" >> /etc/environment
            source /etc/profile
            source /etc/environment
            
            # Update system
            apt update
            DEBIAN_FRONTEND=noninteractive apt-get -y upgrade
            DEBIAN_FRONTEND=noninteractive apt install -y git curl
            DEBIAN_FRONTEND=noninteractive apt install -y openjdk-8-jre-headless git curl screen
            chmod -x /etc/update-motd.d/*
            cat <<EOT > /etc/update-motd.d/01-minecraft
            #!/bin/sh
            #
            HOSTNAME=$(curl -s http://169.254.169.254/latest/meta-data/public-hostname)
            printf "Minecraft Server running on $HOSTNAME port 25565 \n\n"
            EOT
            chmod +x /etc/update-motd.d/01-minecraft
            mkdir /minecraft
            curl -o /minecraft/BuildTools.jar https://hub.spigotmc.org/jenkins/job/BuildTools/lastSuccessfulBuild/artifact/target/BuildTools.jar
            git config --system --unset core.autocrlf

            cd /minecraft
            java -jar -Xmx1024M /minecraft/BuildTools.jar --rev latest
            cat <<EOT > /minecraft/background.sh
            #!/bin/sh
            screen -d -m -S "minecraft" java -jar /minecraft/spigot*.jar -nogui
            EOT
            cat <<EOT > /minecraft/eula.txt
            #By changing the setting below to TRUE you are indicating your agreement to our EULA
            #Mon Feb 25 02:34:11 UTC 2019
            eula=true
            EOT
            chmod +x /minecraft/background.sh
            /minecraft/background.sh
            # do further config on your own, like plugins, operators, server motd, etc
  MinecraftInstanceSecurityGroup:
    Type: AWS::EC2::SecurityGroup
    Properties:
      GroupDescription: Enable Access for Minecraft Server
      SecurityGroupIngress:
      - IpProtocol: '-1'
        CidrIp:
          Ref: ManagementLocation
      - IpProtocol: tcp
        FromPort: '25565'
        ToPort: '25565'
        CidrIp:
          Ref: GameServerLocation
Outputs:
  InstanceId:
    Description: InstanceId of the newly created EC2 instance
    Value:
      Ref: MinecraftEC2Instance
  AZ:
    Description: Availability Zone of the newly created EC2 instance
    Value:
      Fn::GetAtt:
      - MinecraftEC2Instance
      - AvailabilityZone
  PublicDNS:
    Description: Public DNSName of the newly created EC2 instance
    Value:
      Fn::GetAtt:
      - MinecraftEC2Instance
      - PublicDnsName
  PublicIP:
    Description: Public IP address of the newly created EC2 instance
    Value:
      Fn::GetAtt:
      - MinecraftEC2Instance
      - PublicIp